There are many words that express confusion and uncertainty about something,
for example: question/doubt/haze ...

But I can't find a similar word starting with the letter "R". I have been looking for it a whole day, however, the result is disappointing.

closed as off-topic by Edwin Ashworth, tchrist Sep 10 '16 at 18:58

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  • "Questions on choosing an ideal word or phrase must include information on how it will be used in order to be answered. For help writing a good word or phrase request, see: About single word requests" – tchrist
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  • Recondite, perhaps. – V.V. Sep 10 '16 at 8:35
  • Recherche is also possible although, like @V.V.'s suggestion, it refers to the subject and not the person – BoldBen Sep 10 '16 at 11:30
  • Reconsider, perhaps? – Phil Sweet Sep 10 '16 at 13:10
  • The only words I've been able to find that have somewhat the right flavor are reluctance, reservation, reserve, and reticence. Others have already mentioned the first two (and reservation and reserve are related). – Richard Kayser Sep 10 '16 at 16:33
  • 1
    I'm voting to close this question as off-topic because asking for a word which may or may not exist but must begin with r is too narrowly scoped. There is also the problem that there is no mention of which thesauri have already been checked. – Edwin Ashworth Sep 10 '16 at 16:48

What about, "I have my reservations about the accuracy of his theory."

To have reservations: Noun. A doubt or feeling of not being able to agree with or accept something completely (Cambridge Dictionary online)

  • So far, 'reservation' is the best answers. Thank you! – HUANG Taizi Sep 11 '16 at 5:58
  • @HUANGTaizi In Peter Point's suggestion, the noun must be in the plural: reservations is correct, but reservation is not. It's just how the idiom works. – jaxter Dec 4 '16 at 17:50

The only word I can think of that isn't blatantly obvious or easily checked is "reluctance/reluctant" (in this context, questionable); e.g., "he showed great reluctance when offered a drink"; or "he was reluctant to accept the drink."

  • How does "reluctance" address either "confused" or "uncertain"? Reluctance implies that the person would rather not do something (unwillingness or disinclination - dictionary.com/browse/reluctance?s=ts). Therefore, they do have a definite opinion, so they are not uncertain (which implies no definite opinion), and they are not confused (which implies being unable to form an opinion). – jaxter Dec 4 '16 at 17:55

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